Mechanochemical Treated Multi-Walled Carbon Nanotubes for Incorporation of Metal Ions

Abstract:

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Ni catalyst was removed from as received multi-walled Carbon Nanotubes (MWNTs) by acid treatment. Then, the nanotubes were treated with 4M HCl during a ball milling processing yielding mechanochemical treated MWNTs (mech-MWNTs). TEM micrographs indicate that the mech-MWNTs were still of a tubular form but with much shorter length. The equilibrium adsorption of metal ions, e.g Cu2+ and Ni2+, on the mech-MWNTs was investigated at room temperature. The adsorption isotherms gave excellent consistence with the Langmuir theory and the best fit values of K-1 and Κmax can be evaluated using non-linear least-squares. As results, the maximum of Cu2+ and Ni2+ ions uptake on to the mech-MWNTs are 0.93 ± 0.004 mg/g and 2.11 ± 0.01 mg/g respectively. There is no evidence indicating that the pore structure and layer surfaces at both ends of the mech-MWNTs are appropriate sites for metal ions adsorption.

Info:

Periodical:

Advanced Materials Research (Volumes 55-57)

Main Theme:

Edited by:

Tawee Tunkasiri

Pages:

537-540

DOI:

10.4028/www.scientific.net/AMR.55-57.537

Citation:

U. Rinzin et al., "Mechanochemical Treated Multi-Walled Carbon Nanotubes for Incorporation of Metal Ions", Advanced Materials Research, Vols. 55-57, pp. 537-540, 2008

Online since:

August 2008

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$35.00

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